Improvement in plow-cuevises



R. A. BLAIR & J. B. REED. PLOW GLEVISP No. 33 066 Patented Aug. 20,1861.

WWEE Q W fnverzvot flMM 7 UNITED STATES R. A. BLAIR AND JNO. B. REED,

PATENT OFFICE.

OF NEW PHILADELPHIA, OHIO.

IM PROVEMENT IN PLOW-CLEVISES.

Specification forming part' of Letters Patent No. 33,066, dated August20, 1861.

I plan or sectional view of the same.

Similar letters of reference indicate corresponding parts in the twofigures.

The object of this invention is to obtain a plow-clevis which will becapable of being very nicely graduated, in order to give the plow moreor less land, as it is technically termed, in order to turn a slice ofthe required width.

To enable those skilled in the art to fully understand and construct ourinvention, we will proceed to describe it. I

A represents a plow-beam, which may be constructed, in the usual way, ofwood; and B is the clevis, which is of iron, thefront part beingprovided with a series of notches, a, any of which may receive the drafthook or ring 0. The cleVisB is of the usual form, as

willbe seen by referring to Fig. 1; but itsrods or shanks b b, insteadof being short, as hitherto, extend a considerable distance back,- and'are secured by a bolt, D, to the beam A. near the plow-standard.

' E represents a rectangular metal clasp, which is fitted on the frontpart of the beam A, and allowed to slide freely thereon in a directiontransversely with the beam. This clasp E has an eye, 0, at its upper andlower end, said eyes being at the center of the clasp, and the rods orshanksb b of the clevis passing through them, as shown in Fig. 1.

Fis a screw-rod, which passes horizontally through the front part of thebeam A and through a nut, d, which is fitted in the beam A, as shown inFig. 2. The screw-rodF also passes through the sides of the clasp E, andis.

allowed to turn freely therein, the screw-rod having smooth journals e eat its ends, which fit in the clasp E. By this arrangement it will beseen that the clevis B may be shifted or adjusted either to the right orleft by turning the screw-rod F, the latter moving the clasp E, and theclasp moving the clevis. Thusthe clevis may be very nicely graduated inits movement either to the right or left, as may be required.

The depth of the furrow is graduated by adjusting the hook or ring 0higher or lower in the clevis. The higher the hook or ring the deeperthe plow will enter the earth, and vice versa.

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent, is

The employment or use, in combination with the clevis B, of the clasp Eand screwrod F, the whole being applied to the beam A of the plow,substantially as and for the purpose set forth.

ROSS A. BLAIR. JOHN B. REED.

Witnesses:

J. A- THOMPSON, JOHN W. Monnow.

